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Tab Panel

Tab Drag & Drop

This demo shows how to allow users to reorder, add, and remove tabs in a TabPanel widget.

Reorder items
Wrap the TabPanel into the Sortable widget and set the following options:

  • filter
    Specify a CSS selector to indicate draggable items. This demo sets the filter to .dx-tab.

  • itemOrientation
    Set this options to "horizontal". When a user drags a tab, the remaining items move left and right to indicate the drop target.

  • onDragStart and onReorder
    Implement these handlers to configure drag and drop logic and modify the dataSource after the tabs are reordered.

Add or remove tabs
This demo adds and removes tabs in the following two functions:

  • addButtonHandler - a click handler for the "Add Tab" button.
  • closeButtonHandler - a click handler for a tab's Close icon. The demo uses the itemTitleTemplate option to display this icon.

Both handlers modify the TabPanel's dataSource.

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<div id="container"> <dx-button [disabled]="disableButton()" text="Add Tab" icon="add" type="default" (onClick)="addButtonHandler()" ></dx-button> </div> <dx-sortable filter=".dx-tab" [data]="employees" itemOrientation="horizontal" dragDirection="horizontal" (onDragStart)="onTabDragStart($event)" (onReorder)="onTabDrop($event)"> <dx-tab-panel [dataSource]="employees" [height]="410" itemTitleTemplate="title" itemTemplate="item" [deferRendering]="false" [showNavButtons]="true" [repaintChangesOnly]="true" [selectedIndex]="selectedIndex"> <div *dxTemplate="let content of 'title'"> <span>{{content.FirstName}} {{content.LastName}}</span><i *ngIf="showCloseButton()" class="dx-icon dx-icon-close" (click)="closeButtonHandler(content)"></i> </div> <div *dxTemplate="let employee of 'item'"> <div class="employeeInfo"> <img class="employeePhoto" [src]="employee.Picture"/> <p class="employeeNotes"><b>Position: {{employee.Position}}</b><br/>{{employee.Notes}}</p> </div> <div class="caption">{{employee.FirstName + " " + employee.LastName + "'s Tasks:"}}</div> <div class="task-list"> <dx-list [dataSource]="getTasks(employee.ID)" [showSelectionControls]="true" [selectedItems]="getCompletedTasks(employee.ID)" [disabled]="true" selectionMode="multiple"> <div *dxTemplate="let item of 'item'"> <div>{{item.Subject}}</div> </div> </dx-list> </div> </div> </dx-tab-panel> </dx-sortable>
import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxButtonModule, DxSortableModule, DxTabPanelModule, DxListModule, DxTemplateModule } from 'devextreme-angular'; import { Employee, Service, Task } from './app.service'; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'], providers: [Service], preserveWhitespaces: true }) export class AppComponent { allEmployees: Employee[]; employees: Employee[]; selectedIndex: number; tasks: Task[]; tasksDataSourceStorage: any; constructor(private service: Service) { this.allEmployees = service.getEmployees(); this.employees = service.getEmployees().slice(0, 3); this.selectedIndex = 0; this.tasks = service.getTasks(); this.tasksDataSourceStorage = []; } onTabDragStart(e) { e.itemData = e.fromData[e.fromIndex]; } onTabDrop(e) { e.fromData.splice(e.fromIndex, 1); e.toData.splice(e.toIndex, 0, e.itemData); } addButtonHandler() { const newItem = this.allEmployees.filter(employee => this.employees.indexOf(employee) === -1)[0]; this.selectedIndex = this.employees.length; this.employees.push(newItem); } closeButtonHandler(itemData) { const index = this.employees.indexOf(itemData); this.employees.splice(index, 1); if(index >= this.employees.length && index > 0) this.selectedIndex = index - 1; } showCloseButton() { return this.employees.length > 1; } disableButton() { return this.employees.length === this.allEmployees.length; } getTasks(id) { let item = this.tasksDataSourceStorage.find(i => i.key === id); if (!item) { item = { key: id, dataSourceInstance: this.tasks.filter(task => task.EmployeeID === id) }; this.tasksDataSourceStorage.push(item) } return item.dataSourceInstance; } getCompletedTasks(id) { return this.tasks.filter(task => task.EmployeeID === id).filter(task => task.Status === 'Completed'); } } @NgModule({ imports: [ BrowserModule, DxButtonModule, DxSortableModule, DxTabPanelModule, DxListModule, DxTemplateModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #container { display: flex; justify-content: flex-end; padding-bottom: 10px; } ::ng-deep .dx-tabs-wrapper .dx-item.dx-tab { width: auto; padding-left: 20px; } ::ng-deep .dx-tab-content .dx-icon.dx-icon-close { display: inline-block; opacity: 0.6; margin-right: 0; margin-left: 7px; font-size: 18px; } ::ng-deep .dx-sortable-dragging .dx-tab { box-sizing: border-box; text-align: center; } ::ng-deep .employeeInfo .employeePhoto { height: 100px; float: left; padding: 10px 20px 10px 20px; } ::ng-deep .caption { padding: 0px 0px 10px 30px; font-size: 14px; font-weight: bold; } ::ng-deep .task-list { padding: 0px 20px; } ::ng-deep .task-list .dx-state-disabled { opacity: 1; } ::ng-deep .task-list .dx-state-disabled .dx-list-item { opacity: 1; } ::ng-deep .employeeInfo .employeeNotes { min-height: 100px; padding: 20px; text-align: justify; white-space: normal; } ::ng-deep .dx-theme-generic .dx-tabs-wrapper .dx-item.dx-tab { padding-left: 14px; padding-right: 9px; line-height: 1.618; } ::ng-deep .dx-theme-generic .dx-icon.dx-icon-close { font-size: 15px; } ::ng-deep .dx-theme-material .dx-tab-content span { vertical-align: middle; line-height: initial; } ::ng-deep .dx-theme-material .employeeNotes { margin: 0; }
import { Injectable } from '@angular/core'; export class Task { ID: number; Subject: string; StartDate: string; DueDate: string; Status: string; Priority: string; Completion: number; EmployeeID: number; } export class Employee { ID: number; FirstName: string; LastName: string; Prefix: string; Position: string; Picture: string; BirthDate: string; HireDate: string; Notes: string; Address: string; State: string; City: string; } let employees: Employee[] = [{ 'ID': 1, 'FirstName': 'John', 'LastName': 'Heart', 'Prefix': 'Mr.', 'Position': 'CEO', 'Picture': '../../../../images/employees/01.png', 'BirthDate': '1964/03/16', 'HireDate': '1995/01/15', 'Notes': 'John has been in the Audio/Video industry since 1990. He has led DevAv as its CEO since 2003. When not working hard as the CEO, John loves to golf and bowl. He once bowled a perfect game of 300.', 'Address': '351 S Hill St.', 'State': 'California', 'City': 'Los Angeles' }, { 'ID': 2, 'FirstName': 'Olivia', 'LastName': 'Peyton', 'Prefix': 'Mrs.', 'Position': 'Sales Assistant', 'Picture': '../../../../images/employees/09.png', 'BirthDate': '1981/06/03', 'HireDate': '2012/05/14', 'Notes': 'Olivia loves to sell. She has been selling DevAV products since 2012. Olivia was homecoming queen in high school. She is expecting her first child in 6 months. Good Luck Olivia.', 'Address': '807 W Paseo Del Mar', 'State': 'California', 'City': 'Los Angeles' }, { 'ID': 3, 'FirstName': 'Robert', 'LastName': 'Reagan', 'Prefix': 'Mr.', 'Position': 'CMO', 'Picture': '../../../../images/employees/03.png', 'BirthDate': '1974/09/07', 'HireDate': '2002/11/08', 'Notes': 'Robert was recently voted the CMO of the year by CMO Magazine. He is a proud member of the DevAV Management Team. Robert is a championship BBQ chef, so when you get the chance ask him for his secret recipe.', 'Address': '4 Westmoreland Pl.', 'State': 'Arkansas', 'City': 'Bentonville' }, { 'ID': 4, 'FirstName': 'Greta', 'LastName': 'Sims', 'Prefix': 'Ms.', 'Position': 'HR Manager', 'Picture': '../../../../images/employees/04.png', 'BirthDate': '1977/11/22', 'HireDate': '1998/04/23', 'Notes': 'Greta has been DevAV\'s HR Manager since 2003. She joined DevAV from Sonee Corp. Greta is currently training for the NYC marathon. Her best marathon time is 4 hours. Go Greta.', 'Address': '1700 S Grandview Dr.', 'State': 'Georgia', 'City': 'Atlanta' }, { 'ID': 5, 'FirstName': 'Brett', 'LastName': 'Wade', 'Prefix': 'Mr.', 'Position': 'IT Manager', 'Picture': '../../../../images/employees/05.png', 'BirthDate': '1968/12/01', 'HireDate': '2009/03/06', 'Notes': 'Brett came to DevAv from Microsoft and has led our IT department since 2012. When he is not working hard for DevAV, he coaches Little League (he was a high school pitcher).', 'Address': '1120 Old Mill Rd.', 'State': 'Idaho', 'City': 'Boise' }, { 'ID': 6, 'FirstName': 'Sandra', 'LastName': 'Johnson', 'Prefix': 'Mrs.', 'Position': 'Controller', 'Picture': '../../../../images/employees/06.png', 'BirthDate': '1974/11/15', 'HireDate': '2005/05/11', 'Notes': 'Sandra is a CPA and has been our controller since 2008. She loves to interact with staff so if you\'ve not met her, be certain to say hi. Sandra has 2 daughters both of whom are accomplished gymnasts.', 'Address': '4600 N Virginia Rd.', 'State': 'Utah', 'City': 'Beaver' }, { 'ID': 7, 'FirstName': 'Kevin', 'LastName': 'Carter', 'Prefix': 'Mr.', 'Position': 'Shipping Manager', 'Picture': '../../../../images/employees/07.png', 'BirthDate': '1978/01/09', 'HireDate': '2009/08/11', 'Notes': 'Kevin is our hard-working shipping manager and has been helping that department work like clockwork for 18 months. When not in the office, he is usually on the basketball court playing pick-up games.', 'Address': '424 N Main St.', 'State': 'California', 'City': 'San Diego' }, { 'ID': 8, 'FirstName': 'Cynthia', 'LastName': 'Stanwick', 'Prefix': 'Ms.', 'Position': 'HR Assistant', 'Picture': '../../../../images/employees/08.png', 'BirthDate': '1985/06/05', 'HireDate': '2008/03/24', 'Notes': 'Cindy joined us in 2008 and has been in the HR department for 2 years. She was recently awarded employee of the month. Way to go Cindy!', 'Address': '2211 Bonita Dr.', 'State': 'Arkansas', 'City': 'Little Rock' }, { 'ID': 9, 'FirstName': 'Kent', 'LastName': 'Samuelson', 'Prefix': 'Dr.', 'Position': 'Ombudsman', 'Picture': '../../../../images/employees/02.png', 'BirthDate': '1972/09/11', 'HireDate': '2009/04/22', 'Notes': 'As our ombudsman, Kent is on the front-lines solving customer problems and helping our partners address issues out in the field. He is a classically trained musician and is a member of the Chamber Orchestra.', 'Address': '12100 Mora Dr', 'State': 'Missouri', 'City': 'St. Louis' }] let tasks: Task[] = [{ 'ID': 1, 'Subject': 'Prepare 2013 Financial', 'StartDate': '2013/01/15', 'DueDate': '2013/01/31', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 8 }, { 'ID': 2, 'Subject': 'Prepare 3013 Marketing Plan', 'StartDate': '2013/01/01', 'DueDate': '2013/01/31', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 5 }, { 'ID': 3, 'Subject': 'Update Personnel Files', 'StartDate': '2013/02/03', 'DueDate': '2013/02/28', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 2 }, { 'ID': 4, 'Subject': 'Review Health Insurance Options Under the Affordable Care Act', 'StartDate': '2013/02/12', 'DueDate': '2013/04/25', 'Status': 'In Progress', 'Priority': 'High', 'Completion': 50, 'EmployeeID': 2 }, { 'ID': 5, 'Subject': 'Choose between PPO and HMO Health Plan', 'StartDate': '2013/02/15', 'DueDate': '2013/04/15', 'Status': 'In Progress', 'Priority': 'High', 'Completion': 75, 'EmployeeID': 1 }, { 'ID': 6, 'Subject': 'Google AdWords Strategy', 'StartDate': '2013/02/16', 'DueDate': '2013/02/28', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 1 }, { 'ID': 7, 'Subject': 'New Brochures', 'StartDate': '2013/02/17', 'DueDate': '2013/02/24', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 1 }, { 'ID': 11, 'Subject': 'Rollout of New Website and Marketing Brochures', 'StartDate': '2013/02/20', 'DueDate': '2013/02/28', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 5 }, { 'ID': 12, 'Subject': 'Update Sales Strategy Documents', 'StartDate': '2013/02/20', 'DueDate': '2013/02/22', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 9 }, { 'ID': 15, 'Subject': 'Review 2012 Sales Report and Approve 2013 Plans', 'StartDate': '2013/02/23', 'DueDate': '2013/02/28', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 5 }, { 'ID': 16, 'Subject': 'Deliver R&D Plans for 2013', 'StartDate': '2013/03/01', 'DueDate': '2013/03/10', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 3 }, { 'ID': 20, 'Subject': 'Approve Hiring of John Jeffers', 'StartDate': '2013/03/02', 'DueDate': '2013/03/12', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 4 }, { 'ID': 20, 'Subject': 'Approve Hiring of John Jeffers', 'StartDate': '2013/03/02', 'DueDate': '2013/03/12', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 6 }, { 'ID': 21, 'Subject': 'Non-Compete Agreements', 'StartDate': '2013/03/12', 'DueDate': '2013/03/14', 'Status': 'Completed', 'Priority': 'Low', 'Completion': 100, 'EmployeeID': 2 }, { 'ID': 22, 'Subject': 'Update NDA Agreement', 'StartDate': '2013/03/14', 'DueDate': '2013/03/16', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 1 }, { 'ID': 23, 'Subject': 'Update Employee Files with New NDA', 'StartDate': '2013/03/16', 'DueDate': '2013/03/26', 'Status': 'Need Assistance', 'Priority': 'Normal', 'Completion': 90, 'EmployeeID': 4 }, { 'ID': 24, 'Subject': 'Update Employee Files with New NDA', 'StartDate': '2013/03/16', 'DueDate': '2013/03/26', 'Status': 'Need Assistance', 'Priority': 'Normal', 'Completion': 90, 'EmployeeID': 6 }, { 'ID': 25, 'Subject': 'Sign Updated NDA', 'StartDate': '2013/03/20', 'DueDate': '2013/03/25', 'Status': 'Completed', 'Priority': 'Urgent', 'Completion': 100, 'EmployeeID': 7 }, { 'ID': 26, 'Subject': 'Sign Updated NDA', 'StartDate': '2013/03/20', 'DueDate': '2013/03/25', 'Status': 'Completed', 'Priority': 'Urgent', 'Completion': 100, 'EmployeeID': 8 }, { 'ID': 27, 'Subject': 'Sign Updated NDA', 'StartDate': '2013/03/20', 'DueDate': '2013/03/25', 'Status': 'Need Assistance', 'Priority': 'Urgent', 'Completion': 25, 'EmployeeID': 9 }, { 'ID': 35, 'Subject': 'Update Revenue Projections', 'StartDate': '2013/03/24', 'DueDate': '2013/04/07', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 8 }, { 'ID': 36, 'Subject': 'Review Revenue Projections', 'StartDate': '2013/03/25', 'DueDate': '2013/04/06', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 9 }, { 'ID': 40, 'Subject': 'Provide New Health Insurance Docs', 'StartDate': '2013/03/28', 'DueDate': '2013/04/07', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 4 }, { 'ID': 41, 'Subject': 'Provide New Health Insurance Docs', 'StartDate': '2013/03/28', 'DueDate': '2013/04/07', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 6 }, { 'ID': 50, 'Subject': 'Give Final Approval for Refunds', 'StartDate': '2013/05/05', 'DueDate': '2013/05/15', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 2 }, { 'ID': 52, 'Subject': 'Review Product Recall Report by Engineering Team', 'StartDate': '2013/05/17', 'DueDate': '2013/05/20', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 1 }, { 'ID': 55, 'Subject': 'Review Overtime Report', 'StartDate': '2013/06/10', 'DueDate': '2013/06/14', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 7 }, { 'ID': 60, 'Subject': 'Refund Request Template', 'StartDate': '2013/06/17', 'DueDate': '2014/04/01', 'Status': 'Deferred', 'Priority': 'Normal', 'Completion': 0, 'EmployeeID': 9 }, { 'ID': 71, 'Subject': 'Upgrade Server Hardware', 'StartDate': '2013/07/22', 'DueDate': '2013/07/31', 'Status': 'Completed', 'Priority': 'Urgent', 'Completion': 100, 'EmployeeID': 7 }, { 'ID': 72, 'Subject': 'Upgrade Personal Computers', 'StartDate': '2013/07/24', 'DueDate': '2014/04/30', 'Status': 'In Progress', 'Priority': 'Normal', 'Completion': 85, 'EmployeeID': 7 }, { 'ID': 74, 'Subject': 'Decide on Mobile Devices to Use in the Field', 'StartDate': '2013/07/30', 'DueDate': '2013/08/02', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 3 }, { 'ID': 78, 'Subject': 'Try New Touch-Enabled WinForms Apps', 'StartDate': '2013/08/11', 'DueDate': '2013/08/15', 'Status': 'Completed', 'Priority': 'Normal', 'Completion': 100, 'EmployeeID': 3 }, { 'ID': 81, 'Subject': 'Review Site Up-Time Report', 'StartDate': '2013/08/24', 'DueDate': '2013/08/30', 'Status': 'Completed', 'Priority': 'Urgent', 'Completion': 100, 'EmployeeID': 5 }, { 'ID': 99, 'Subject': 'Submit D&B Number to ISP for Credit Approval', 'StartDate': '2013/11/04', 'DueDate': '2013/11/07', 'Status': 'Completed', 'Priority': 'High', 'Completion': 100, 'EmployeeID': 8 }, { 'ID': 117, 'Subject': 'Approval on Converting to New HDMI Specification', 'StartDate': '2014/01/11', 'DueDate': '2014/01/31', 'Status': 'Deferred', 'Priority': 'Normal', 'Completion': 75, 'EmployeeID': 3 }, { 'ID': 138, 'Subject': 'Review HR Budget Company Wide', 'StartDate': '2014/03/20', 'DueDate': '2014/03/25', 'Status': 'In Progress', 'Priority': 'Normal', 'Completion': 40, 'EmployeeID': 6 }, { 'ID': 145, 'Subject': 'Final Budget Review', 'StartDate': '2014/03/26', 'DueDate': '2014/03/27', 'Status': 'In Progress', 'Priority': 'High', 'Completion': 25, 'EmployeeID': 6 }] @Injectable() export class Service { getEmployees() { return employees; } getTasks(){ return tasks; } }
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here: // https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/ System.config({ transpiler: 'ts', typescriptOptions: { module: "system", emitDecoratorMetadata: true, experimentalDecorators: true }, meta: { 'typescript': { "exports": "ts" }, }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@3.4.5/lib/typescript.js', '@angular': 'npm:@angular', 'tslib': 'npm:tslib/tslib.js', 'rxjs': 'npm:rxjs', 'devextreme': 'npm:devextreme@20.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram@1.0.9', 'devexpress-gantt': 'npm:devexpress-gantt@1.0.7', 'devextreme-angular': 'npm:devextreme-angular@20.1' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, }, packageConfigPaths: [ "npm:*/package.json", "npm:@angular/*/package.json", "npm:@angular/common/*/package.json", "npm:rxjs/operators/package.json", "npm:devextreme-angular@20.1/*/package.json", "npm:devextreme-angular@20.1/ui/*/package.json", ] });
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.6/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script src="config.js"></script> <script> System.import('app').catch(console.error.bind(console)); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <demo-app>Loading...</demo-app> </div> </body> </html>